18th Century German steel strong box with hidden lock

The box is rectangular in shape and has a steel lattice design to the exterior. It features twin handles at either side and opens via a hinged lid on the top. The box can be locked both via the keyhole on the front side, and via a hidden lock on the box's lid, which is concealed by a steel flap. The interior of the box is painted red and on the underside of the lid there are pierced steel decorations, concealing the complex locking mechanism.